近来问无限级数据库树菜单人很多，我就自己做了一个仿照csdn左面的菜单，自己暂时不用，完全是给大家分享的，要数据库和代码文件请到www.ymdg.com/tree.rar下载，如果有人提供空间存放那是最好了。
本文完全采用大家熟悉的ASP（VBS）制作，过写日子我再写一个基于XML技术的给大家。
QQ:28963147,email:panyuguang962@sohu.com
感谢CSDN和全体网友！
说明：
Access数据库
● 数据库名：tree
● 表名：tree
● 字段名的设计
ID 文本类型 编码
Name 文本类型 节点文字
HyperLink 文本类型 相关信息
---------------------------------------------------
ID | Name | HyperLink
---------------------------------------------------
1_1_1 | ASP | http://www.csdn.net
---------------------------------------------------
1_1_1_1 | DHTML | http://www.csdn.net
---------------------------------------------------
1_2_2 | JAVA | http://www.csdn.net
---------------------------------------------------
1_1_2 | JavaScript | http://www.csdn.net
---------------------------------------------------
1_2_1 | VB | http://www.csdn.net
---------------------------------------------------
1_2_1_2 | VBA | http://www.csdn.net
---------------------------------------------------
1_1 | WEB开发 | http://www.csdn.net
---------------------------------------------------
1 | WWW.CSDN.net | http://www.csdn.net
---------------------------------------------------
1_2_1_1 | 基础类 | http://www.csdn.net
---------------------------------------------------
1_3_1 | 基础类 | http://www.csdn.net
---------------------------------------------------
1_2 | 开发语言 | http://www.csdn.net
---------------------------------------------------
1_1_1_2 | 内建对象 | http://www.csdn.net
---------------------------------------------------
1_3 | 数据库 | http://www.csdn.net
----------------------------------------------------
文件：nolimited.asp经简单测试好用！代码如下：
<html>
<head>
<META name=VI60_defaultClientScript content=VBScript>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<title>asp树的研究</title>
</head>
<style type="text/css">
<!--
.aa {
font-size: 14px;
color: #000000;
text-align: center;
vertical-align: middle;
letter-spacing: 0px;
word-spacing: 0px;
}
-->
</style>
<body bgcolor="DEE3F7">
<%
dim cn,rs,SQL ,Para,NumChild
set cn=server.CreateObject("ADODB.connection")
set rs=server.createobject("ADODB.recordset")
set rs1=server.createobject("ADODB.recordset")
cn.Open "Driver={Microsoft Access Driver (*.mdb)}; DBQ=" & Server.MapPath("tree.mdb")
SQL="Select * from tree order by ID"
rs.open SQL,cn,3,2
do while not rs.EOF
SQL="Select ID from tree where ID like '" & rs("ID") & "%' and ID<>'" & rs("ID") & "' order by ID"
Para=rs("ID") & "|"
NumChild=0
rs1.open SQL,cn, 3,2
NumChild=rs1.RecordCount
do while not rs1.EOF
Para =Para & rs1("ID") & "|"
rs1.MoveNext
loop
Para=cstr(trim(left(Para,len(Para)-1)))
rs1.Close
%>
<table id="T<%=rs("ID")%>"
border=1
cellpadding=0
cellspacing=0
bordercolor="#DEE3F7"
class="aa"
abbr="<%=Para%>"
summary=<%=checkid(rs("ID"))%>
style="cursor:hand"
onClick="vbs:subtree '<%=Para%>'" >
<tr>
<td width="<%=17+checkid(rs("ID"))*20%>"
height="20" align="right">
<table width="20" height="20" border="1" cellpadding="0" cellspacing="0" bordercolor="#DEE3F7">
<tr>
<td align="center" valign="middle" bordercolor="#000000" id="R<%=rs("ID")%>" ><%if NumChild=0 then Response.Write "." else Response.Write "-"%></td>
</tr>
</table>
</td>
<td height="20"
nowrap
bordercolor="#FFFFFF"
onMouseOver="vbs:me.bgcolor='#CCCCCC':me.bordercolor='#999999'"
onMouseOut="vbs:me.bgcolor='#DEE3F7':me.bordercolor='#ffffff'"
title="<%=rs("HyperLink")%>">
<%=rs("Name")%></td>
</tr>
</table>
<%
rs.MoveNext
loop
rs.Close:set rs=nothing
cn.Close:set cn=nothing
function checkid(x)
dim Tempnum
Tempnum=0
for i=1 to len(x)
if mid(x,i,1)="_" then
Tempnum=Tempnum+1
end if
next
checkid=Tempnum
end function
%>
<script language=VBS>
sub subtree(Client_para)
if instr(Client_para,"|")=0 then exit sub
Myarray=split(Client_para,"|")
Mytext=eval("R" & Myarray(0) & ".innertext")
select case Mytext
case "+"
document.all.item("R" & Myarray(0)).innertext="-"
for i=1 to ubound(Myarray)
if eval("T" & Myarray(i) & ".summary")-eval("T" & Myarray(0) & ".summary")=1 then
document.all.item("T" & Myarray(i)).style.display="block"
end if
if eval("T" & Myarray(i) & ".summary")-eval("T" & Myarray(0) & ".summary")>1 then
document.all.item("T" & Myarray(i)).style.display="none"
end if
next
case "-"
document.all.item("R" & Myarray(0)).innertext="+"
for i=1 to ubound(Myarray)
if eval("T" & Myarray(i) & ".summary")-eval("T" & Myarray(0) & ".summary")>=1 then
document.all.item("T" & Myarray(i)).style.display="none"
if eval("R" & Myarray(i) & ".innertext")="-" then
document.all.item("R" & Myarray(i)).innertext="+"
end if
end if
next
end select
set Myarray=nothing
end sub
Sub document_onselectstart
document.selection.clear
End Sub
if isobject(eval("T1")) then
subtree document.all("T1").abbr
subtree document.all("T1").abbr
end if
</script>
</html>
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